YS/T 820.23-2012 PDF English
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Methods for Chemical Analysis of Laterite Nickel Ores - Part 23: Determination of Cobalt, Iron, Nickel, Phosphorus, Aluminium Oxide, Calcium Oxide, Chromium Oxide, Magnesium Oxide, Manganese Oxide, Silicon Dioxide and Titanium Dioxide Content - Wavelength Dispersive X-ray Fluorescence Spectrometry
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YS/T 820.23-2012: Methods for Chemical Analysis of Laterite Nickel Ores - Part 23: Determination of Cobalt, Iron, Nickel, Phosphorus, Aluminium Oxide, Calcium Oxide, Chromium Oxide, Magnesium Oxide, Manganese Oxide, Silicon Dioxide and Titanium Dioxide Content - Wavelength Dispersive X-ray Fluorescence Spectrometry
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YS
NON-FERROUS INDUSTRY STANDARD
ICS 73.060
D 04
Methods for Chemical Analysis of Laterite Nickel Ores - Part 23.
Determination of Cobalt, Iron, Nickel, Phosphorus, Aluminium
Oxide, Calcium Oxide, Chromium Oxide, Magnesium Oxide,
Manganese Oxide, Silicon Dioxide and Titanium Dioxide Content
- Wavelength Dispersive X-ray Fluorescence Spectrometry
Issued on. NOVEMBER 7, 2012
Implemented on. MARCH 1, 2013
Issued by. Ministry of Industry and Information Technology of the
People’s Republic of China
Table of Contents
Foreword... 3
1 Application Scope... 5
2 Normative References... 5
3 Method Summary... 6
4 Reagents and Materials... 6
5 Apparatus... 6
6 Specimen... 7
7 Analytical Procedures... 7
8 Precision... 10
9 Test report... 11
Annex A (Informative) Preparation of Calibration Samples... 12
Annex B (Informative) Reference Operating Conditions for Instruments... 14
Annex C (Informative) Calibration Equation... 15
Foreword
This Part was drafted in accordance with the rules given in GB/T 1.1-2009.
YS/T 820-2012, Methods for Chemical Analysis of Laterite Nickel Ores, includes 26
parts.
-- Part 1.Determination of Nickel Content - Flame Atomic Absorption Spectrometry;
-- Part 2.Determination of Nickel Content - Dimetylglyoxime Spectrophotometry;
-- Part 3.Determination of Total Iron Content - Potassium Dichromate Titration;
-- Part 4.Determination of Phosphorus Content - Phosphorus Molybdenum Blue
Spectrophotometry;
-- Part 5.Determination of Cobalt Content - Flame Atomic Absorption Spectrometry;
-- Part 6.Determination of Copper Content - Flame Atomic Absorption Spectrometry;
-- Part 7.Determination of Calcium and Magnesium Content - Flame Atomic
Absorption Spectrometry;
-- Part 8.Determination of Silica Content - Potassium Silicafluoride Titrimetric
Method;
-- Part 9.Determination of Scandium and Cadmium Contents - Inductively Coupled
Plasma Mass Spectrometry;
-- Part 10.Determination of Calcium, Cobalt, Copper, Magnesium, Manganese,
Nickel, Phosphate and Zinc Content - Inductively Coupled Plasma-Atomic
Emission Spectrometry;
-- Part 11.Determination of Fluorine and Chlorine Contents - Ion Chromatography;
-- Part 12.Determination of Manganese Content - Flame Atomic Absorption
Spectrometry;
-- Part 13.Determination of Lead Content - Flame Atomic Absorption Spectrometry;
-- Part 14.Determination of Zinc Content - Flame Atomic Absorption Spectrometry;
-- Part 15.Determination of Cadmium Content - Flame Atomic Absorption
Spectrometry;
-- Part 16.Determination of Carbon and Sulfur Content - High Frequency
Combustion with Infrared Absorption Spectrometry;
-- Part 17.Determination of Arsenic, Antimony and Bismuth Contents - Hydride
Generation-atomic Fluorescence Spectrometry;
-- Part 18.Determination of Mercury Content - Cold Atomic Absorption
Spectrometry;
-- Part 19.Determination of Aluminum, Chromium, Iron, Magnesium, Manganese,
Nickel and Silicon Contents - Energy-Dispersive X-Ray Fluorescence
Spectrometry;
-- Part 20.Determination of Aluminum Content - EDTA Titration;
-- Part 21.Determination of Chromium Content - The Ammonium-ferrous Sulfate
Titration Method;
-- Part 22.Determination of Magnesium Content - EDTA Titration;
-- Part 23.Determination of Cobalt, Iron, Nickel, Phosphorus, Aluminium Oxide,
Calcium Oxide, Chromium Oxide, Magnesium Oxide, Manganese Oxide, Silicon
Dioxide and Titanium Dioxide Content - Wavelength Dispersive X-ray
Fluorescence Spectrometry;
-- Part 24.Determination Hygroscopic Moisture Content - Gravimetric Method;
-- Part 25.Determination of Combined Water Content - Gravimetric Method;
-- Part 26.Determination of Loss on Ignition - Gravimetric Method.
This Part is Part 23 of YS/T 820-2012.
This Standard shall be under the jurisdiction of National Technical Committee 243 on
Non-ferrous Metals of Standardization Administration of China (SAC/TC 243).
The responsible drafting organizations of this Standard are Beijing General Research
Institute of Mining and Metallurgy, Bayuquan Entry-exit Inspection and Quarantine
Bureau of the People’s Republic of China, Jinchuan Non-ferrous Group Co., Ltd.
The drafting organizations of this Part. Ningbo Entry-exit Inspection and Quarantine
Bureau of the People’s Republic of China, Bayuquan Entry-exit Inspection and
Quarantine Bureau of the People’s Republic of China.
The contributory drafting organizations of this Part. Changshu Entry-exit Inspection
and Quarantine Bureau, Nantong Entry-exit Inspection and Quarantine Bureau.
The main drafters of this Part. Zhang Jianbo, Lin Li, Chu Ning, Hou Jin, Zhu Jiayu, Li
Weigang, Dou Huaizhi, Chen Shaohong, Hou Jianguo.
Methods for Chemical Analysis of Laterite Nickel Ores - Part 23.
Determination of Cobalt, Iron, Nickel, Phosphorus, Aluminium
Oxide, Calcium Oxide, Chromium Oxide, Magnesium Oxide,
Manganese Oxide, Silicon Dioxide and Titanium Dioxide Content -
Wavelength Dispersive X-ray Fluorescence Spectrometry
1 Application Scope
This Standard specifies the wavelength dispersive x-ray fluorescence spectrometry for
the determination of cobalt, iron, nickel, phosphorus, aluminium oxide, calcium oxide,
chromium oxide, magnesium oxide, manganese oxide, silicon dioxide and titanium
dioxide content in laterite nickel ores.
This Standard applies to the determination of cobalt, iron, nickel, phosphorus,
aluminium oxide, calcium oxide, chromium oxide, magnesium oxide, manganese oxide,
silicon dioxide and titanium dioxide content in laterite nickel ores. See Table 1 for the
measuring range.
Table 1 -- Measuring Ranges of All Components in laterite nickel ores
2 Normative References
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition dated applies to this document. For
undated references, the latest edition of the referenced documents (including all
amendments) applies to This Standard.
GB/T 6379.2-2004, Accuracy (Trueness and Precision) of Measurement Methods
and Results - Part 2.Basic Method for the Determination of Repeatability and
Component Measuring range (mass fraction)/%
Reproducibility of a Standard Measurement Method (ISO 5725-2.1994, IDT)
GB/T 16597, Analytical Methods of Metallurgical Products General Rule for X-Ray
Fluorescence Spectrometric Methods
3 Method Summary
Use a fusion-agent to cast specimen into specimen fuse-pieces suitable for the
measurement of X-ray fluorescence spectrometer. Under the selected measuring
conditions of the instrument, measure the X-ray fluorescence strength of the
characteristic spectral line of elements to be measured in specimen fuse-pieces;
4 Reagents and Materials
Unless specified otherwise, the water used in the analysis shall be identified as
analytically pure reagent and distilled water or deionized water or water of equivalent
purity.
4.1 Mixed solvent of lithium tetraborate and lithium metaborate (12-22). guaranteed
reagent; burning for 4 h at 600°C before use.
4.2 Lithium nitrate. dry for 2 h at 105°C before use.
4.3 Lithium bromide. dry for 2 h at 105°C before use.
4.5 Mixed gas of argon and methane. containing argon of volume fraction 90% and
methane of volume fraction 10%.
5 Apparatus
5.1 Wavelength dispersive X-ray fluorescence spectrometer. as specified in GB/T
16597.
5.2 Crucible. made of platinum alloy (95% Pt + 5% Au); and the volume is greater
than 30 ml.
6 Specimen
6.1 Specimen
The grain size of specimen shall be less than 160 μm.
7 Analytical Procedures
7.1 Number of times of measurement
Carry out two measurements independently; and take the mean value.
7.2 Determination of loss on ignition
Use water to wash the porcelain crucible clean (30 ml); dry; burn in a high temperature
furnace at 1 050°C ~ 1 100°C to constant weight; and place into a desiccator. Weigh
about 1.0 g of specimen (6.1), accurate to 0.1 mg; place in the crucible of constant
weight; and burn in the high temperature furnace at 1 050°C ~ 1 100°C to constant
weight.
7.3 Preparation of specimen fuse pieces
One of the following methods may be used to weigh specimen.
7.4 Plotting of calibration curve
7.4.1 Standard samples
Use reagents of high purity, solution of nitric acid or water medium of known
concentration and/or multiple certified standard substances to prepare standard
samples. See Annex A for the specific method for preparation. Multiple certified
standard substances are recommended as the basis for the preparation of standard
samples.
7.5 Determination
7.5.1 Drift correction
Choose appropriate specimen fusion pieces as the drift correction fusion pieces for the
drift correction of the instrument. Use single-point correction or double-point correction;
and the time interval for correction shall be decided by the stability of the instrument.
After the mixed gas of argon and methane (4.5) is replaced, a drift correction must be
carried out.
7.6 Calculation of analytical results
In accordance with the X-ray fluorescence strength of the characteristic spectral lines
of all elements in the specimen fusion pieces measured, calculate the content of all
components in accordance with the calibration equation; and convert into the dry-basis
result in accordance with Formula (2) or Formula (3).
8 Precision
The precision of this Part is determined by the statistics as specified in GB/T 6379.2-
2004, based on the results of 5 horizontal specimens measured in 4 laboratories
respectively. See Table 2 for the precision.
9 Test report
This Article specified the content included by test report, which shall, at least, give the
content in the following aspects.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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